Socket wrench



O. C. SNELL.

SOCKET WRENCH. APPLICATKON FILED 007.10.1921'.

It Agfigfigg) Patented Aug. 22, 1922.5

Aim/Way OVTENS G. SNELL, OF DALLAS, TEXAS.

SOCKET it/BENCH.

r W??? w o e o tr l at la is l l i is raeaesa Application filed October 10, 1921.

To all whom it may concern:

Be it known that Q, Ownns C. SNELL, a citizen of the United States, residin at Dallas, in the county of Dallas and Estate or" Texas, have invented certain new and useful Improvements in Socket /Vrenc-hes, of which the following is a specification.

This invention relates to new and useful improvements in socket wrenches.

The object of the invention is to provide a socket wrench of that type which includes an extension for holding the nut against rotation, while the bolt is being rotated to disconnect the same, or vice versa. The invention has particularly to do with that type of wrench which is adapted to travel a pair of flanges such as those forming part of an engine base and hold the nut against rotation while the bolt is being unscrewed.

A particular object or" the invention is to provide a keeper for engaging the upper end of a castle nut such as are employed where cotter pins are used. Another feature of the invention resides in means for eX- polling the bolt from the socket after said bolt has been unscrewed.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of the following speci fication and by reference to the accompanying drawin s, in which an example of the invention is shown and wherein:

Fig. 1 is anelevation of a wrench con structed in accordance with my invention,

Fig. 2 is an enlarged vertical sectional view of the upper end of the wrench,

Fig. 3 is an enlarged cross section on the line 33 of Fig. 1,

Fig. at is adetail showing the underside of the keeper, and

Fig. 5 is a plan view of the socket.

, In the drawings the numeral designates a shank which may be separately or integrally connected with a crank 11 such as is employed with an ordinary boring brace. A hand rest 12 is suitably mounted to rotate on the lower end of the crank. The details of this construction. are immaterial.

At its upper end the shank is fastened in the lower end of a socket sleeve 13, which prefer-ably has angular internal walls so as to receive the head A, of a bolt B. Within the socket sleeve I mount a plunger 1th which is provided with a longitudinal retaining Specification of Letters Patent.

Patented Aug. 22, 13 222.

Serial No. 506,777.

groove 15 receiving a set screw 16 mounted in the side wall. The set screw permits the plunger to move vertically in the socket and to be depressed by the head A, but limits the movement of said plunger. The plunger rests upon a coiled spring 17 within the sleeve, which spring tends to force the plunupwardly to either expel the head A of the bolt therefrom or to force the socket sleeve away from the said head A when the wrench is removed from the work.

A. short bar 18 is slidable on the shank 10. A keeper plate 19 is also mounted on the shank immediately below the sleeve 18 and is supported by the upper end of a coiled spring 20 which encircles the shank and rests upon the bar 18. An extension 21 is mounted in apertures in the plate 19 and the bar 18, being fastened in the latter by a thumb screw 22. The extension 21 has a lateral offset 23 which carries an inwardly directed head 24 overhanging the socket sleeve and the plate 19. The construction of this head is important. The head is reduced and provided with a round opening 25 and a shoulder 26. Below the opening 25, the head has an angular socket 27.

In using the wrench the head is displaced from the socket 13, which causes the bar 18 to be moved upwardly on the shank so that the spring 20 is placed under tension. This permits a projection as C, to be received between the head and the socket with the head A. of the bolt depending into the socket sleeve which is pressed up against the underside of the projection C, whereby the plunger 14 is depressed. The head is engaged over the nut D so that the upper portion of the castle nut is received within said opening and the lower angular portion is received in the socket 27. By this arrangement the head cannot be displaced laterally from the nut and the latter is held against rotation. By revolving the crank 11 the bolt B is rotated and unscrewed from the nut D. The spring 17 is constantly under tension, and this tends to raise said plunger or depress said socket sleeve whereby the head A is partially expelled from the upper end of the sleeve 18 and is prevented from wedging or sticking in said socket during the opera tion. It will be seen that by adjusting the extension 21, projections of varying widths may be engaged between the head and the socket.

A wrench of this character is of particube displaced from the nut.

lar value because it will not slip off the work and will operate quickly. No time will be lost in extracting the head A of the bolt from the socket and the device is substantial and easy to operate.

.. .The round opening is of great importance, as where the nut D is unscrewed from a long bolt, the head would easily I The guard or retainer formed by the rim of the opening holds thehead on the nut and fits readily over the rounded castle nut or bolt, yet permits the angular socket 27 to readily engage the nut.

, Various changes .in the construction and dimensions as well as modifications, may be made without departing from the splrlt of the invention.

"What I claim, is

1.. In a socket wrench, a revoluble shank, a socket fixed on the end of the shank, a bar Y slldable on the shank, a keeper mounted on the shank between the bar and the socket, a colled'sprlng surrounding the shank bea coiled spring surrounding the shank between the bar, and the keeper, an extension slidable throughthe keeperand adjustably fastened. in the bar, a head on the .end of the extension overhanging the socket and provided with a round opening for receiving a nut and an angular socket below the opening for engaging the lower portion of a nut,

and a spring plunger in the socket ofthe shank for engaging a bolt head received in said socket. I p I In testimony whereof I afliX my slgnature.

OWENS C. SNELL. 

